Hello everyone, nice to welcome you on our site, this page even has Level 1 answers. I enjoy it =D
Level 1 - URSTESRO
The answer to this puzzle is:
Words: ROUSTERS, TRESSOUR, SOUREST, STORERS, TRUSSER, OUSTERS, ROSTERS, SOUTERS, OESTRUS, TUSSORE, ROUSTER, TOURERS, STOURES, ESTROUS, SORTERS, ROUSERS, STORER, ROUSES, SEROUS, TUSSER, ESTRUS, SORTER, SUREST, RUSSET, TOURER, ROUSER, OUTERS, RETROS, SOUTER, OUSTER, TOUSES, TOSSER, ROUSTS, SOREST, TSORES, ROUTES, TORSES, SETOUS, STOURE, TUSSOR, ROSETS, SOURER, STOURS, TORSE, TORUS, SUERS, ROUTE, RUERS, TRESS, RUSTS, OUSTS, SURER, SOURS, OUTRE, SUETS, RETRO, SOUSE, TRUER, SORER, TORES, ROUTS, TOUSE, SORES, ROTES, ROSET, SORUS, ROUES, TORRS, TRUSS, STOUR, ROSES, ROUST, RUSES, OUTER, TRUES, ERRS, ROSE, ROES, EURO, TORE, RUTS, TOSS, SORE, OUTS, RUST, OURS, SORT, TRES, USES, REST, SETS, USER, TOUR, SURE, TOES, SOUS, SOUR, SUES, ORES, ERST, SUET, TRUE, ROTS, TORS, TORR, OUST, EROS, UTES, RUES, RUSE, ROTE, ROUT, OUR, USE, TOR, SOU, SER, OUT, ROE, RUT, ROT, RES, SET, SUE, ERR, ORE, SOT, RUE, TOE
Bonus words:
ROUSTERS, TRESSOUR, SOUREST, STORERS, TRUSSER, OUSTERS, ROSTERS, SOUTERS, OESTRUS, TUSSORE, ROUSTER, TOURERS, STOURES, ESTROUS, SORTERS, ROUSERS, STORER, ROUSES, SEROUS, TUSSER, ESTRUS, SORTER, SUREST, RUSSET, TOURER, ROUSER, OUTERS, RETROS, SOUTER, OUSTER, TOUSES, TOSSER, ROUSTS, SOREST, TSORES, ROUTES, TORSES, SETOUS, STOURE, TUSSOR, ROSETS, SOURER, STOURS, TORSE, TORUS, SUERS, ROUTE, RUERS, TRESS, RUSTS, OUSTS, SURER, SOURS, OUTRE, SUETS, RETRO, SOUSE, TRUER, SORER, TORES, ROUTS, TOUSE, SORES, ROTES, ROSET, SORUS, ROUES, TORRS, TRUSS, STOUR, ROSES, ROUST, RUSES, OUTER, TRUES, ERRS, ROSE, ROES, EURO, TORE, RUTS, TOSS, SORE, OUTS, RUST, OURS, SORT, TRES, USES, REST, SETS, USER, TOUR, SURE, TOES, SOUS, SOUR, SUES, ORES, ERST, SUET, TRUE, ROTS, TORS, TORR, OUST, EROS, UTES, RUES, RUSE, ROTE, ROUT, OUR, USE, TOR, SOU, SER, OUT, ROE, RUT, ROT, RES, SET, SUE, ERR, ORE, SOT, RUE, TOE